code: def _assemble_cond(self, node_id):
      feature_idx = self._tree.feature[node_id]
      threshold_num_val = ast.NumVal(self._tree.threshold[node_id])
      return lte(ast.FeatureRef(feature_idx), threshold_num_val)
  
file_path: m2cgen/m2cgen/assemblers/tree.py
imports: from m2cgen import ast
  from m2cgen.assemblers.base import ModelAssembler
  from m2cgen.assemblers.utils import lte
label_desc: Use image node_id 6 for calling the TreeModelAssembler obj's underlying member method code with example usage: obj._assemble_cond(node_id) and returns: lte